Three simple culture devices for aquatic invertebrates and fish larvae with continuous recirculation of the medium

摘要: The 3 culturing devices described are based on the principle of classic air-water lift, which facilitates continuous recirculation and aeration cultivation medium. first device is a “circulation cylinder”, convenient for hatching eggs brine shrimp Artemia salina algae protozoans. In second device, an internal basket (i.e., glass cylinder with plankton-gauze bottom) prevents animals being carried along in lift. third analogous to second, provided lateral waste-drain water collector siphon, empties regularly into main culture vessel. proved be excellent variety aquatic metazoans. They fulfil two elementary principles cultivation: food particles kept suspension evenly distributed, necessary without injuring sensitive animals.